@article{PAR00022054, title = {{I}ndividualistic evolutionary responses of {C}entral {A}frican rain forest plants to {P}leistocene climatic fluctuations}, author = {{H}elmstetter, {A}. {J}. and {B}ethune, {K}. and {K}amdem, {N}. {G}. and {S}onke, {B}. and {C}ouvreur, {T}homas}, editor = {}, language = {{ENG}}, abstract = {{U}nderstanding the evolutionary dynamics of genetic diversity is fundamental for species conservation in the face of climate change, particularly in hyper-diverse biomes. {S}pecies in a region may respond similarly to climate change, leading to comparable evolutionary dynamics, or individualistically, resulting in dissimilar patterns. {T}he second-largest expanse of continuous tropical rain forest ({TRF}) in the world is found in {C}entral {A}frica. {H}ere, present-day patterns of genetic structure are thought to be dictated by repeated expansion and contraction of {TRF}s into and out of refugia during {P}leistocene climatic fluctuations. {T}his refugia model implies a common response to past climate change. {H}owever, given the unrivalled diversity of {TRF}s, species could respond differently because of distinct environmental requirements or ecological characteristics. {T}o test this, we generated genome-wide sequence data for >700 individuals of seven codistributed plants from {L}ower {G}uinea in {C}entral {A}frica. {W}e inferred species' evolutionary and demographic histories within a comparative phylogeographic framework. {L}evels of genetic structure varied among species and emerged primarily during the {P}leistocene, but divergence events were rarely concordant. {D}emographic trends ranged from repeated contraction and expansion to continuous growth. {F}urthermore, patterns in genetic variation were linked to disparate environmental factors, including climate, soil, and habitat stability. {U}sing a strict refugia model to explain past {TRF} dynamics is too simplistic. {I}nstead, individualistic evolutionary responses to {P}leistocene climatic fluctuations have shaped patterns in genetic diversity. {P}redicting the future dynamics of {TRF}s under climate change will be challenging, and more emphasis is needed on species ecology to better conserve {TRF}s worldwide.}, keywords = {tropical rain forests ; climate change ; phylogenetics ; demography ; {CAMEROUN} ; {GABON} ; {CONGO}}, booktitle = {}, journal = {{P}roceedings of the {N}ational {A}cademy of {S}ciences of the {U}nited {S}tates of {A}merica}, volume = {117}, numero = {51}, pages = {32509--32518}, ISSN = {0027-8424}, year = {2020}, DOI = {10.1073/pnas.2001018117}, URL = {https://www.documentation.ird.fr/hor/{PAR}00022054}, }